Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:25:14 2012 Optimize a model with 297 rows, 221 columns and 961 nonzeros Presolve time: 0.00s Presolved: 297 rows, 221 columns, 961 nonzeros Variable types: 0 continuous, 221 integer (221 binary) Found heuristic solution: objective 72.0000000 Root relaxation: objective 0.000000e+00, 110 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 0.00000 0 73 72.00000 0.00000 100% - 0s H 0 0 64.0000000 0.00000 100% - 0s H 0 0 58.0000000 0.00000 100% - 0s 0 0 0.76523 0 77 58.00000 0.76523 98.7% - 0s H 0 0 57.0000000 0.76523 98.7% - 0s 0 0 0.79037 0 75 57.00000 0.79037 98.6% - 0s H 0 0 52.0000000 0.79037 98.5% - 0s 0 0 0.84516 0 75 52.00000 0.84516 98.4% - 0s 0 0 0.88169 0 75 52.00000 0.88169 98.3% - 0s H 0 0 50.0000000 0.88169 98.2% - 0s 0 0 0.88804 0 77 50.00000 0.88804 98.2% - 0s H 0 0 44.0000000 0.88804 98.0% - 0s H 0 0 41.0000000 0.88804 97.8% - 0s 0 2 0.94630 0 77 41.00000 0.94630 97.7% - 0s H 27 27 35.0000000 4.62500 86.8% 28.2 0s * 32 25 21 34.0000000 4.62500 86.4% 24.7 0s H 54 43 32.0000000 4.62500 85.5% 22.7 0s * 72 45 13 27.0000000 8.12500 69.9% 22.6 0s * 808 55 14 26.0000000 19.52000 24.9% 16.6 0s Cutting planes: Gomory: 1 Mod-K: 5 Explored 1015 nodes (16746 simplex iterations) in 0.70 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.600000000000e+01, best bound 2.600000000000e+01, gap 0.0%